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Old 09-22-2003, 05:36 AM
george tichbour george tichbour is offline
Join Date: Jun 2002
Location: Mississauga, Ontario,Canada
Posts: 478
To get the proper reduction with a 4" drive wheel you should be using an 8" contact wheel.

An alternative is to mount the contact wheel on a lay shaft and drive the contact wheel with a belt...again the motor pully should be exactly 1/2 the diameter of the lay shaft pully but you are now able to use whatever diameter contact wheel you like because the lay shaft will be turning at 1750 all the time.

My homemade grinder is the lay shaft variety with a driven contact wheel on a 1/4" thick steel plate base.

The advantage of the driven contact wheel on a lay shaft is that you can use the machine either as a grinder or as a bufffer. Make sure that the contact wheel overhangs the edge of the plate for clearance.

george tichbourne
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